DE1891856U - DC SMALL MOTOR WITH AN IRONLESS ROTOR. - Google Patents

Description

PA 186 4GM2.3.64 hi

ρ ¹ 'Siemens & Halslce AG. Munich, March 10, 1964

Mej / BrI

S 40 630 / 21d Gm PA 62/2172

DC miniature motor with an ironless rotor

The "price increase" relates to a DC miniature motor with a ironless eotor, its cylindrical winding rotatable in the air gap between an excitation magnet arranged inside the winding and magnetized in the radial direction and a das Motor housing forming iron jacket is arranged.

There are miniature motors for direct current known in which the exciter magnet is self-supporting on an end shield of the housing is attached and the cup-shaped rotor, which is open on one side, is pushed onto it from the other side. Of the The rotor is supported on the motor shaft only at its one end face. This arrangement has the disadvantage that at high speeds and narrow air gap due to a manufacturing-related imbalance! Centrifugal forces occur which deflect the rotor winding on one side, what rush to touch the winding with stationary! of the engine.

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The task of the firing system is now to address this disadvantage remedy for engines of the type mentioned above.

According to the current version, this is solved by the fact that the one with a concentric bore provided Brregermagnet over a cylindrical Connecting piece is attached to one of the G-ehäusedeclcel closing off the motor housing on the front side, and that the Exciter magnets protruding on both end faces in the axial direction Rotor winding is attached to one support disc each, One of which is firmly connected to the output shaft and the other on the cylindrical connecting piece between the exciter magnet and housing cover is rotatably mounted.

In the description below, inflation is based on two Detailed examples explained in more detail

A first example of a motor is shown in ligoi Section shown, the exciter magnet 1 through on one side a thin, tubular! carrier 2 is firmly connected to an end shield 3. At the other end, the originator can magnet 1 be supported by means of the bearing 4 on the Y / elle 5, However, this is not absolutely necessary if the tubular Carrier 2 is sufficiently rigid. The rotor winding β is fixed to one end face by the insulating disk 7

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connected to the shaft 5 and on the other end face by the Disk 8 rotatably mounted on the tubular carrier 2. For the sake of completeness, the commutator 9, the brushes 10, the power supply lines 11 and 12 and the G housing 13 are also shown

In Pig ο 2 shows a second exemplary embodiment in section, whereby der Erregerma, gnet 14 unilaterally through the firmly in the frontal Bearing plate 15 located bolt 16 is held and secured against rotation. The other end of the riot warning is rotatably mounted on the end of the output shaft 17 protruding into the rotor as a pin. However, this is not absolutely necessary when the bolt 16 is sufficiently rigid. The output shaft is connected to the motor winding via the insulating material disk 18 19 firmly connected, which in turn are rotatable on the other end face through the insulating disk 20 on the bolt 16 is stored. For the sake of completeness, the commutator 21, the brushes 22, the power supply 23 and 24 and the G housing 25 are included shown with.

Claims (1)

Minchen, March 10th, 1964 Mey / Bri S 40 630/21 a Gm Pl 62/2172 Protection claims 1. DC miniature motor with an ironless rotor, whose cylindrical winding rotatable in the air gap between one arranged within the winding and magnetize in the radial direction excitation ermagne th and the motor housing "forming iron jacket is arranged, characterized in that the with a concentric bore provided exciter magnet via a cylindrical connecting piece on one of the front ends of the motor housing Housing cover is attached, and that the exciters on both end faces in an axial sighting Outstanding eotor winding attached to a support disc each is, of which one is firmly connected to the output shaft and the other on the cylindrical connecting piece rotatably mounted between the exciter magnet and the housing cover is. 2. Motor according to claim 1, characterized in that the connecting piece between the exciter magnet (1) and the G-attachment cover (3) consists of a sleeve (2) which is inserted into the two housing covers rotatably mounted output shaft (5) coaxially encloses at a distance. 5. Motor according to claim 1, characterized in that the The connecting piece between the exciter magnet (14) and the one housing cover (15) is a bolt (16) so that the output shaft (17) opposite this bolt is only supported in the other housing cover. 4 · Motor according to claim 1 or the following claims, characterized in that the exciter magnet on its attachment opposite end with a rotatable bearing on which the drive is supported.